Tire module with piezo-electric transducer and tire equipped therewith
First Claim
1. A tire module for attaching to an inside of a pneumatic tire for motor vehicles, the tire module comprising:
- a pressure sensor configured for measuring and/or monitoring the air pressure in the tire;
a transmitter for transmitting radio signals, the radio signals containing information regarding the air pressure in the tire, the transmitter connected to the pressure sensor;
a mechanical-electrical transducer with a flexible, circular, disc-shaped piezo-electric element, which converts alternating changes in the shape of the piezo-electric element caused by the rolling tire into electric energy, hereinafter described as a piezo disc, and on which an electrical voltage generated through the piezo effect is tapped off at contact points; and
a storage unit for the electric energy, which is connected to the transducer and powering the pressure sensor and transmitter;
wherein the contact points are located on opposite sides of the piezo disc.
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Accused Products
Abstract
A tire module for attachment to an inside of a pneumatic tire for vehicles includes a device for measuring and/or monitoring the air pressure in the tire. A transmitter for transmitting radio signals, which contains information regarding the air pressure in the tire, includes a mechanical-electrical transducer having a flexible piezo-electrical element, which converts alternating changes in shape of the piezo-electric element caused by the rolling tire into electric energy and includes a storage unit for the electric energy, which is connected to the transducer. The transducer may contain a circular, disc-like, piezo-electric element, which in the following is described as piezo disc and on which an electrical voltage generated through the piezo effect is tapped off on contact points which are located on opposite sides of the piezo disc.
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Citations
25 Claims
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1. A tire module for attaching to an inside of a pneumatic tire for motor vehicles, the tire module comprising:
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a pressure sensor configured for measuring and/or monitoring the air pressure in the tire; a transmitter for transmitting radio signals, the radio signals containing information regarding the air pressure in the tire, the transmitter connected to the pressure sensor; a mechanical-electrical transducer with a flexible, circular, disc-shaped piezo-electric element, which converts alternating changes in the shape of the piezo-electric element caused by the rolling tire into electric energy, hereinafter described as a piezo disc, and on which an electrical voltage generated through the piezo effect is tapped off at contact points; and a storage unit for the electric energy, which is connected to the transducer and powering the pressure sensor and transmitter; wherein the contact points are located on opposite sides of the piezo disc. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A pneumatic tire for vehicles, on the inside of which a tire module is fastened, the tire module comprising:
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a pressure sensor configured for measuring and/or monitoring the air pressure in the tire; a transmitter for transmitting radio signals, which contain information regarding the air pressure in the tire, the transmitter connected to the pressure sensor; a mechanical-electrical transducer with a flexible, circular, disc-like piezo-electric element, which converts alternating changes in shape of the piezo-electric element caused by the rolling tire into electric energy, hereinafter described as a piezo disc, and on which an electrical voltage generated through the piezo effect is tapped off at contact points; and a storage unit for the electric energy, which is connected to the transducer and powering the pressure sensor and transmitter; wherein the contact points are located on opposite sides of the piezo disc; the tire module being fastened to the inside of the pneumatic tire in such a way that a deformation of the inside of the pneumatic tire results in a reversible deformation of the metal disc and of the piezo disc. - View Dependent Claims (24, 25)
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Specification